Double stroke cold header



April 17, 1934. J H FR DMAN' 1,955,061

,DOUBLE STROKE COLD HEADER Filed March 17, 1933 3 SheetsSheet l 5i J6 v I 27 g j I 624 39 22 L 3 21 15 20 m If I 2 //A\&\\\%\ it] T 12 JolmflFi iedlmrL mm April 17 1934. v JIH FRlEDMAN 1,955,061

DOUBLE STROKE COLD HEADER Filed March 17, 1933 5 Sheets-Sheet 2 Srwentor 1 BB r April 17, 1934. J, H. FRIEDMAN 1,955,061

. DOUBLE STROKE COLD HEADER Filed March 17, 1933 3 Sheets-Sheet 3 Patented Apr. 17, 1934 DOUBLE STROKE COLD HEADER John H. Friedman, Tiflin, Ohio, assignor to The National Machinery Company, Tiffin, Ohio Application March 17, 1933. Serial No. 661,387

27 Claims.

This invention relates to a double stroke cold header of the type wherein separate heading tools are carried by the, slide and are brought successively into position to engage a blank. In a machine of this character wherein a solid die is used it is the practice usually to' shear off blanks from a coil of wire and to carry each blank to position in front of the solid die. Thereafter one of the heading tools, usually a .c'one tool, forces the blank into the solid die and gives an initial shape to the end of the blank. During the next advance of the slide the finishing tool completes the shaping of the-blank after which the article is ejected by suitable means provided for that purpose. 7

It is a fact well-known to those skilled in this art that the uncoilingof the stock leaves a slight bend in each blank cut therefrom. Furthermore the shearing-off of the blank from the stock also tends to bend or distort theblank as it is de livered to the stationary die. The same bends or other distortions .will occur in all of the blanks of the same job because every blank must go through the same procedure and be subjected to the same forces as it travels to its ultimate.

position.

It is also well-known that as each blank is positioned in front of the stationary dies a considerable portion thereof will be left unsupported. in the open. Consequently even though the finishing tool is on center and the other or cone .tool is on the theoretical center, each blank during'the first shaping operation will have a tend- -ency to buckle. Not only will the buckling be influenced by the amount and direction of distortion of each blank. but the hardness, diameter and length of the unsupported portion of the blank will also contribute to locate the shaped end of the blank off-center unless proper rem- 40 cdies are provided.

As every blank on a particular job will tend to buckle in the same direction and to the same extent for the reasons pointed out, it has been found that any adjustment made for the purpose of counteracting the bends produced in one blank will meet the requirements of all other blanks of the same job.

Heretofore, as far as I am aware, it has not been possible in a double stroke cold header, to adjust both the finishing and the cone tools independently in every direction for the purpose of meeting the various conditions resulting not only from the initial coiling of the stock and the shearing-off of the blanks but also to meet the changing conditions due to diflerences in so that after the extent and direction of the bend of every blank of a particular job has been ascertained the respective tools can be minutely and accurately adjusted to counteract the effect of the offset in the blank and insure proper centering of the shaped end of each blank.

With the foregoing and other objects in view which willappear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be-made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings:

Figure 1 is a front elevation of the heading slide of a double stroke cold header provided with the adjustable tool carrier constituting the present invention.

Figure 2 is a section on line 2-2, Figure 1.

Figure 3 is a side elevation of a portion of the heading slide and the tool carrier mounted thereon. t

Figure 4 is a section on line 44, Figure 1.-

Figure 5 is a front elevation on a reduced scale showing the cone tool in work engaging position.

Figure 6 is a similar view showing the tools in their intermediate positions.

Figure 7 is a view like Figures 5 and 6 and illustrating the finishing tool in-workengaging position.

Figure 8 is a view in diagramillustrating the adjustment of the cone tool.

Figure 9 is a similar view illustrating the lateral adjustment of the cone tool.

Figure 10 is a diagram illustrating the downward adjustment of the finishing tool;

Referring to the figures by characters of reference 1 designates a heading slide provided at the upper corners of its front face with ears 2 in which 110 head .8 and is coaxial with the shank 7.

are mounted stop screws 3 and 4 respectively each of which has a lock nut 5. The screws are extended toward each other and constitute means for limiting the rocking action of the tool carrier.

Extending back into the heading slide is a bore 6 in which is rotatably mounted a shank 7 extending rearwardly from the head 8 of the carrier. This head is preferably substantially triangular and its back surface has a sliding working fit upon the front surface of the slide 1. One end portion of the head projects between the screws 4 and is formed with abutments 9 and 10 adapted to engage the respective screws 3 and 4 when the head is rocked to its two extreme positions.

A socket 11 is formed in the front face of the In this socket is seated a pin 12 having a projecting head 13 in which is secured one end of a screw 14.

Clamping bolts15 and 16 are anchored in the respective end portions of the head 8 and extend through openings 17 formed in the respective end portions of anintermediatc plate 18.

A portion of the intermediate plate 18 is extended laterally so as to lap that portion of the head 8 from which the shank 7 extends. This extension 19 of the intermediate plate has a socket 20 in its back face into which the head 13 extends. A screw-threaded bore 21 extends f rom'the socket 20 to the margin of the extension 19 and seated therein is a screw-threaded sleeve 22 through which screw 14 extends. One end of sleeve 22 bears against the head 13 while its other end has a head or enlargement 23 whereby the sleeve can be turned to adjust it against or away from head 13. The projecting end of the screw 14 is engaged by a nut. 24'.

Bearing rearwardly against the intermediate plate 18 and fitting snugly thereon, is a tool holder 24 provided, adjacent to its ends, with openings 25 through which the anchored bolts 15 and 16 extend. The tool holder is frictionally engaged by washers 26 mounted on the bolts 15 and 16 and binding nuts 27 engage the bolts and washers as shown particularly in Figure 4.

The tool holder 24 has an engagement or boss 28 extending forwardly therefrom between its ends in which are formed sockets 29 and 30. The

socket 29 contains a centering washer 31 from which projects a stud 32 which is seated in socket 33 formed in the intermediate plate 18. This stud and its socket have their axis on a line intersecting the longitudinal axis of the bore 21 and screw 14 so that it thus becomes possible to adjust the tool holder 24 angularly about the axis of the stud 21 without changing the position of the center of socket 29 relative to the longitudinal axis of the adjusting screw 14.

A finishing tool 34 is adapted to be seated in socket 29 and its working face 35 will be coaxial with the stud 32. The other tool 36 which is designated in the present instance as a cone tool is seated in the socket 30.

Extending into opposed sides of the intermediate plate 18 adjacent to the lower end thereof are set screws 3'7 and 38 which are oppositely disposed and engage opposed portions of the bolt 15. Another pair of opposed set screws is located in the upper portion of the tool holder 28 and these screws, which have been indicated at 39 and 40, are adapted to engage opposed portions of the bolt 16.

In a double stroke cold header it is of course essential that the two tools be brought successively to positions to coincide with the center of a fixed die in the bed frame of the machine.

The tools 36 and 34 and the parts carrying them are adapted to be rocked automatically by any suitable means provided for that purpose and about the 'axis of the shank 7. One means for effecting this oscillation of the tools has been disclosed in the co-pending application of William L. Clouse filed December 4, 1930, Serial No. 500,073. It is to be understood of course that the actuating means constitutes no part of the present invention.

As has heretofore been stated it becomes necessary, because ofthe buckling tendency of the blank, to effect adjustments of the tools in order that the cone produced on the blank will be properly centered and consequently finished accurately. Independent adjustment of the tools on a double stroke cold header has not been possible heretofore but in the present instance it is effected readily and minutely because of the peculiar construction of the carrier herein disclosed. For example, by adjusting the screw 3 toward screw 4 the movement of the tool 36 upwardly toward the right in Figure 1 can be lessened with the result that the ultimate position of said tool will be lowered as shown in diagram in Figure 8 wherein the lowered position of the tool has been indicated at a. The ultimate position of the tool can be raised by adjusting screw 3 away from the screw 4 so as to reverse the action illustrated in Figure 8.

Should it be desired to shift the tool 36 laterally in one direction in addition to or independent of either the upward or downward adjustments already described, it'would first be necessary to loosen the two nuts 27. By then loosening screw 40 and tightening screw 39 the holder 24 would be swung about its pivot stud 32 to move the tool 36 to the right as shown at b. Thereafter the two nuts 27 are tightened to hold the parts against relative movement. Adjustment of the tool 36laterally in the opposite direction is effected by loosening screw 39 and tightening screw 40.

The finishing tool 34 can be lowered for centering by unscrewing the screw 4 to bring the finishing tool 34 to the position indicated at c in Figure 10. Obviously by reversing the adjust: inent of the screw 4 the position of the finishing tool when centered will be raised.

Should wear of the machine make it impossible for the operator to adjust the finishing tool on center as in the manner heretofore described. further adjustments could be made as follows:

The finishing tool can be reset on its center by loosening the nuts 27 and then adjusting one or the other of the screws 37 and 38. For example. by unscrewing the screw 37 and tightening screw 38 the intermediate plate 18 will be swung about the axis of stud 12 and relative to the two bolts 15 and 16, thereby causing the finishing tool to be raised. By reversing this operation the finishing tool will be lowered.

By loosening the nut 24, on screw 14 the sleeve 22 can be adjusted by means of its head 23 to slide the intermediate plate 18 upon the surface of the head 8 thereby to move the finishing tool to the right or to the left as desired.

It is to be understood of course that following the various adjustments of the holder all nuts are to be tightened to prevent relative movement of the parts.

By providing adjustments such as have been described it will be obvious that the tools of a double stroke cold header can be set accurately to properly center the cone initially produced on a blank, the adjustment being such as to oil-set any deflections due to bends in the blank. Furthermore the finishing tool can be set accurately to produce a properly centered finish on the work. After one adjustment has been effected the shaping of the articles can be proceeded with without variation until such time as wear upon the machine will necessitate compensation. The adjustment by. means of screws 37 and 38 and the screw 14 can then be effected.

What is claimed is:

1. In a double stroke cold header. a heading slide, a tool carrier mounted for oscillation on the working face of the slide, a holder for separate tools movable with the carrier, and independently adjustable means for limiting the oscillation of the carrier in opposite directions respectively.

2. In a double stroke cold header a heading slide, a tool carrier mounted for oscillation on the working face thereof, separate tools movable with the carrier, independently adjustable means for limiting the oscillation of the carrier, and adjustable means for bodily shifting the tools relative to the axis of oscillation of the carrier.

3. A double stroke cold header including a heading slide, a tool carrier mounted for oscillation thereon, a tool holder on the carrier, and means for adjusting the holder relative to the axis of oscillation of the carrier.

4. A double stroke cold header including a heading slide, a tool carrier mounted for oscillation thereon, a tool holder, separate tools carried thereby, an intermediate member interposed between the tool holder and the carrier, means for adjusting the intermediate member angularly relative to and about the axis of oscillation of the carrier, and means for adjusting the holder angularly about thecenter of one of the tools and relative to the intermediate member.

5. A double stroke cold header including a heading slide, a tool carrier mounted for oscillation thereon, a tool holder, separate tools carried thereby, an intermediate member interposed between the tool holder and the carrier, means for adjusting the intermediate member angularly relative to and about the axis of oscillation of the carrier, means for adjusting the holder angularly about the center of one o! the tools and relative to the intermediate member, and means extending through the holder and intermediate member for fastening them against relative movement subsequent to their angular adjustments.

6. A double stroke cold header including a heading slide, a tool carrier mounted for oscillation thereon, a tool holder, separate tools carried thereby, an intermediate member interposed between the tool holder and the carrier, means for adjusting the intermediate member angularly relative to and about the axis of oscillation of the carrier, means for adjusting the holder angularly about the center of one of the tools and relative to the intermediate member, and means for binding the holder and intermediate member together to prevent relative movement thereof.

'7 A double stroke cold header including a heading slide, a tool carrier mounted for oscillation thereon, a tool holder, separate tools carried thereby, an intermediate member interposed be larly about the center of one of the tools and relative to the intermediate member, and means for adjusting the intermediate member relative to the carrier and radially o! the axis of oscillation of the carrier.

8. A double stroke cold header including a heading slide, a tool carrier mounted for oscillation thereon, a tool holder, separate tools carried thereby, an intermediate member interposed between the tool holder and the carrier, means for adjusting the intermediate member angularly relative to and about the axis of oscillation of the carrier, means for adjusting the holder angularly about the center of one of the tools and relative to the intermediate member, means for adjusting the intermediate member 'relative to the carrier and radially of the axis of oscillation of the carrier, and means for binding together the carrier, holder and intermediate member to secure them against relative movement.

9. In a double stroke cold header a heading slide mounted for horizontal movement, a tool carrier mounted for oscillation thereon in a plane perpendicular to the line of movement of the slide, separate tools movable with the carrier, means for adjusting one of the tools laterally independently of the other tool, and adjustable means for positioning said tool at a predetermined elevation when at one limit of its oscillating movement.

10. In a double stroke cold header a heading slide, a carrier mounted for limited oscillation thereon, a holder, a finishing tool and a cone tool thereon, an intermediate member between the carrier and holder, means for adjusting the cone tool angularly relative to the carrier, and

about the axis of the finishing tool, and means for adjusting the finishing tool angularly relative to the carrier.

11. In a double stroke cold header a heading slide, a carrier mounted for limited oscillation thereon, a holder, a finishing tool and a cone tool thereon, an intermediate member between the carrier and bolder, means for adjusting the cone tool angularly relative to the carrier, and about the axis of the finishing tool, and separate means for adjusting the finishing tool angularly relative to the carrier, and radially relative to the axis of oscillation of the carrier.

12. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an-intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, oppositely disposed adjusting means in the'intermediate member for engaging opposed portions of one of the bolts, and oppositely disposed adjusting means in the holder for engaging opposed portions of the other bolt.

13. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon,

an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and toolholder, an choring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, saidintermediate member and holder being adjustable angularly on the bolts, oppositely disposedadjusting means in the m carried by the holder, and a pivotal connection between the holder and intermediate member coaxial with one of the tools.

14. In a double stroke cold header a heading slide. a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable'angularly on the bolts, oppositely disposed adjusting means in the intermediate member for engaging opposed portions of one of the bolts, oppositely disposed adjusting means in the holder for engaging opposed portions of the other bolt, separate finishing and cone tools carried by the holder, and 'a pivotal connection between the holder and intermediate member coaxial with the finishing tool.

15. In a double stroke cold header aheading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, oppositely disposed adjusting means in the intermediate member for engaging opposed portions of one of the bolts, oppositely disposed adjusting,

means for adjusting said member and the parts thereon radially of the axis of oscillation of the carrier.-

16. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon,

an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and toolholder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, oppositely disposed adjusting means in the intermediate member tor engaging opposed portions of one of the bolts. oppositely disposed adjusting means in the holder for engaging opposed portions of the other bolt, separate finishing and cone tools carried'by the holder, a pivotal connection between the holder and intermediate member coaxial with the finishing tool, and adjustable means for limiting the oscillation of the carrier and .the parts thereon.

17. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool,holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate and holder being adjustable angularly on the bolts, oppositely disposed adjusting means in the "intermediate member {or engaging opposed portions of one of the bolts, oppositely disposed adjusting means in the holder for engaging opposed portions of the other bolt, separate finishing and cone tools carried by the holder, a. pivotal connection between the holder and intermediate member coaxial with the finishing tool, means for adjusting said member and the parts thereon radially relative to the axis of oscillation of the carrier, and adjustable means for limiting the oscillation of the carrier. I

18. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end porti.ns of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, adjusting means in the intermediate member for engaging one of the bolts, and adjusting means in the holder for engaging the other bolt.

19 In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate'member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging, the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, adjusting means in the intermediate member for engaging one of the bolts, and adjusting means in the holder for engaging the other bolt, separate tools carried by the holdei and a pivotal connection between the holder and intermediate member coaxial with one of the tools.

20. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, adjusting means in the intermediate member for engaging one of the bolts, adjusting means in the holder for engaging the other bolt, separate finishing and cone tools carried by the holder, and a pivotal connection between the holder and intermediate member coaxial with the finishing tool. I

21. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engaging the bolts for bindng together the holder, 4 intermediate member and carrier, said intermediate member and-holder being adjustable angularly on the bolts, adjusting means in the intermediate member for engaging one of the bolts, adjusting means in the holder for engaging the other bolt, separate finishing and cone tools carried by the,

holder, a pivotal connection between the holder and intermed'ate member coaxial with the finishing tool, and means for adjusting said member and the parts thereon radially of the axis of oscillation of the carrier.

22. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder, anchoring bolts extending from the carrier and through the openings, means engagingthe bolts for binding together the holder, intermediate member and carrier, said intermediate member and holder being adjustable angularly on the bolts, adjusting means in the intermediate member for engaging one of the bolts, adjusting means in the holder for engaging the other bolt, separate finishing and cone tools carried by the holder, a pivotal connection between the holder and intermediate member coaxial with the tinishing tool, and adjustable means for limiting the oscillation of the carrier and the parts thereon.

23. In a double stroke cold header a heading slide, a carrier mounted for oscillation thereon, an intermediate member, a tool holder, there being matching openings in the end portions of the intermediate member and tool holder,anchoring bolts extending from the carrier and through the openings, means engaging the bolts for binding together the holder, intermediate member and'c'arrier, said intermediate member and holder being adjustable angularly on the bolts, adjusting means in the intermediate member for engaging one of the bolts, adjusting means in the holder for engaging the other bolt, separate finishing and cone tools carried by the holder, a

pivotal connection between the holder and intermediate member coaxial with the finishing tool, means for adjusting said member and the parts thereon radially relative to the axis of oscillation of the carrier, and adjustable means for limiting the oscillation of the carrier.

24. In a double stroke cold header, a heading slide, a tool holder movable therewith, a finishing tool and a cone tool both engaged by the holder, means for adjusting the cone tool about the axis of the finishing tool. and means for adjusting both tools and the holder-relative to the slide. V

, 25. In a double stroke cold header, a heading slide, a tool holder movable therewith and mounted for oscillation, a finishing tool and a cone tool both engaged by the holder, means for adjusting the cone tool about the axis of the finishing tool, means for adjusting both tools and the holder relative to the slide, and adjustable means for limiting the oscillation of the holder.

26; In a double stroke cold header, a heading slide, a tool holder movable therewith, separate tools both engaged by the holder, means for adjusting one tool about the axis of the other tool, 

